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Old 04-09-12, 06:19 PM   #21
spencer1885
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I will look in my ebay for the seller.
I have not put it all together as I still need a battery and a charge controller.
The lister has over a hundred hours so far running the house in the evening to date.
Matthew
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Old 04-09-12, 06:24 PM   #22
RobSmith
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I found this:
http://blog.comparemysolar.co.uk/bes...-solar-panels/
That seems to say that we might get 40% of their rated power in summer and about 10% in winter.

Rob
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Old 04-09-12, 06:39 PM   #23
listerdiesel
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They certainly don't give their rated power easily!

The new controller has arrived, but I'm struggling to understand it and what the display is telling me.

I also briefly tried putting the two panels in series, but the controller wouldn't work with an input over 33V.

Peter
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Old 04-09-12, 07:59 PM   #24
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Quote:
Originally Posted by listerdiesel View Post
They certainly don't give their rated power easily!

The new controller has arrived, but I'm struggling to understand it and what the display is telling me.

I also briefly tried putting the two panels in series, but the controller wouldn't work with an input over 33V.

Peter
Peter,
Is it a chinese made cheap controller?
If so it's probably junk,you may have to buy a quality mppt controller to get the full benefit.
Did yoy have any luck finding me any batteries?

Matthew
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Old 04-09-12, 08:03 PM   #25
spencer1885
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Quote:
Originally Posted by RobSmith View Post
I found this:
http://blog.comparemysolar.co.uk/bes...-solar-panels/
That seems to say that we might get 40% of their rated power in summer and about 10% in winter.

Rob
That's why you have to have such a large aray to get a good average.

Matthew
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Old 04-09-12, 08:59 PM   #26
listerdiesel
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Quote:
Originally Posted by spencer1885 View Post
Peter,
Is it a chinese made cheap controller?
If so it's probably junk,you may have to buy a quality mppt controller to get the full benefit.
Did yoy have any luck finding me any batteries?

Matthew
No, it's a pretty good quality unit from Taiwan, and it is MPPT.

I've been in touch with the makers who have been very helpful, I just don't have a handle yet on what is happening in the system.

Peter
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Old 04-09-12, 09:03 PM   #27
RobSmith
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Quote:
Originally Posted by spencer1885 View Post
That's why you have to have such a large aray to get a good average.

Matthew
I think I will go for a something like a 3kw array and have not enough in winter and more than I need in summer and then rely on other means during the winter.

Rob
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Old 04-09-12, 09:06 PM   #28
RobSmith
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Quote:
Originally Posted by spencer1885 View Post
Peter,
Is it a chinese made cheap controller?
If so it's probably junk,you may have to buy a quality mppt controller to get the full benefit.
Did yoy have any luck finding me any batteries?

Matthew
Our two boys have a bucket full of AA's :embarassed:
Rob
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Old 04-09-12, 09:13 PM   #29
spencer1885
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Our two boys have a bucket full of AA's :embarassed:
Rob
I think you may need them your self by the sound of it.
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Old 04-09-12, 09:19 PM   #30
spencer1885
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Quote:
Originally Posted by listerdiesel View Post
No, it's a pretty good quality unit from Taiwan, and it is MPPT.

I've been in touch with the makers who have been very helpful, I just don't have a handle yet on what is happening in the system.

Peter
The mppt controllers that are used on pv systems have a 150v max voltage.
If you can't put in 30 odd volts in to your mppt it can't be much cop.


Matthew
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